This is a confusing situation especially wher the nikah has already took place she could have made it clear to them before the nikah that she wants to become a doctor ok her parents were strict she could have some how got his number and talked to him i mean what advice can we give her now its a bit too late for that, she should ask a maulvi saab from her local mosque if she can ask for divorce because you can tell her in laws will never accept what she wants anyway good luck to her.